default parameters in constructor class

[mickey]

hello, I've got one class constructor with two option parameter; so I can create the object like this:

Myobj::Myobj( char* parone="", char* partwo="") :
     _name(parone), _value(partwo) {........}
 
Myobj obj(); // in this case warning
Myobj obj("one", "two"); //this ok.
 
//warning is: prototyped function not called (was a variable definition intended?)

Myobj::Myobj( char* parone="", char* partwo="") :
     _name(parone), _value(partwo) {........}

Myobj obj(); // in this case warning
Myobj obj("one", "two"); //this ok.

//warning is: prototyped function not called (was a variable definition intended?)

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I suppose that to using default parameters is necessary has first parameters not default. Is this? Anyway: I'd like avoid a second constructor because I had to duplicate its contents (and It could be large). Ideas?

THanks..